body {
    overflow-x: hidden;
}

.background {
    padding: 100px 100px 200px 100px;
    height: 900px;
    /*background-image: linear-gradient(to top, #4481eb 0%, #04befe 100%);*/
    background-image: linear-gradient(to top, #4481eb 0%, #04befe 100%);
    position: relative;
}

.nav {
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    position: fixed;
    z-index: 999;
    color: #fff;
    background-color: transparent;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    transition: box-shadow .25s ease-in-out, background-color .25s ease-in-out;
}

.change-nav {
    color: #666;
    background-color: #fff;
    box-shadow: rgba(0, 0, 0, 0.3) 0 20px 40px -20px;
    transition: box-shadow .25s ease-in-out, background-color .25s ease-in-out;
}

.link-group {
    display: flex;
    justify-content: center;
    align-items: center;
}

.link-item {
    padding: 10px 20px;
    /*color: #fff;*/
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 4px;
    transition: transform .25s ease-in-out;
}

.link-item:hover {
    transform: translateY(-5px);
    transition: all .25s ease-in-out;
}

.action-login {
    font-size: 20px;
    font-weight: bold;
    letter-spacing: 4px;
    height: 40px;
    padding: 0 20px;
    outline: none;
    border: none;
    border-radius: 12px;
    color: #fff;
    background: transparent;
    box-shadow: #fff 0 0 5px 1px;
    transition: transform .25s ease-in-out, box-shadow .25s ease-in-out;
}

.action-login:hover {
    transition: transform .25s ease-in-out, box-shadow .25s ease-in-out;
    box-shadow: #fff 0 0 15px 0;
}

.change-nav .action-login {
    box-shadow: #000 0 0 5px 1px;
    color: #666;
}

.change-nav .action-login:hover {
    box-shadow: #000 0 0 15px 0;
}

.banner {
    border-radius: 16px;
    box-shadow: rgba(0, 0, 0, 0.2) 0 60px 100px -30px;
    padding: 120px 0;
    /*display: flex;*/
    /*position: relative;*/
    justify-content: space-evenly;
    align-items: center;
    background-image: linear-gradient(to top, #4481eb 0%, #04befe 100%);
    background-size: 100% 100%;
    height: 600px !important;
}

.banner-img {
    text-align: center;
}

.wrap {
    /* width: 500px; */
    height: 600px;
    /*display: flex;*/
    /*flex-direction: column;*/
    /*justify-content: space-evenly;*/
}

.wrap-title {
    font-size: 80px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: bold;
    letter-spacing: 20px;
    text-shadow: 5px 6px 10px #d7d7d7;
    -webkit-text-stroke: 1px #999;
}

.wrap-content {
    font-size: 40px;
    color: white;
    font-weight: bold;
    margin-bottom: 10px;
    opacity: 0.8;
}

.wrap-button {
    width: 180px;
    height: 50px;
    margin-top: 40px;
    border: none;
    outline: none;
    border-radius: 16px;
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    background-color: transparent;
    background-image: linear-gradient(to right, #0acffe 0%, #495aff 100%);
    transition: transform .5s ease-in-out, box-shadow .25s ease-in-out;
}

.wrap-button:hover {
    transition: transform .25s ease-in-out, box-shadow .25s ease-in-out;
    box-shadow: rgba(0, 0, 0, 0.5) 0 25px 30px -20px;
    transform: translateY(-5px) !important;
}

.introduction {
    padding: 150px 0 0 0;
    height: 800px;
    background-color: #fff;
    /*box-shadow: rgba(0, 0, 0, 0.3) 0 40px 60px -30px;*/
}

.title {
    color: #555;
    text-align: center;
    font-size: 48px;
    font-weight: bold;
    letter-spacing: 12px;
}

.title-decoration {
    width: 30%;
    height: 10px;
    border-radius: 16px;
    background-image: linear-gradient(to right, #4facfe 0%, #00f2fe 100%);
    margin: 20px auto;
}

.introduction-item-group {
    height: 500px;
    padding: 100px 100px;
    /*display: flex;*/
    /*justify-content: space-evenly;*/
    /*align-items: center;*/
}

.introduction-item {
    opacity: 0.8;
    /*width: 20%;*/
    height: 210px;
    padding: 10px 0 0 0;
    text-align: center;
    position: relative;
    transform: scale(0.8, 0.8) !important;
    transition: transform .5s ease-in-out, box-shadow .5s ease-in-out, opacity .5s ease-in-out;
}

.introduction-item:hover {
    opacity: 1;
    transition: all .25s ease-in-out;
    transform: translateY(-5px) scale(0.9, 0.9) !important;
}

.introduction-item:hover .introduction-item-round {
    opacity: 1;
    transition: all .25s ease-in-out;
    box-shadow: 0 20px 70px -15px rgba(99, 184, 255, 1);
}

.introduction-item-content {
    font-size: 25px;
    font-weight: bold;
}

.introduction-item-round {
    margin: auto;
    width: 210px;
    height: 210px;
    transform: scale(0.9,0.9) !important;
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    opacity: 0.8;
    box-shadow: 0 12px 26px -4px rgba(99, 184, 255, 0.6);
    transition: transform .25s ease-in-out, box-shadow .25s ease-in-out;
}

.introduction-tip > .ant-tooltip-content > .ant-tooltip-inner {
    font-size: 16px;
    padding: 25px;
    letter-spacing: 2px;
    opacity: 0.8;
    border-radius: 12px;
}

.slider {
    padding: 0 10%;
    height: 900px;
    background-color: #fff;
    position: relative;
}

.slider-img {
    max-width: 100%;
    height: auto;
    display: inline-block;
    margin: auto;
}

.change-slider {
    width: 60px;
    height: 60px;
    position: absolute;
    top: 50%;
    z-index: 999;
    transform: translateY(-50%);
    opacity: 0.1 !important;
    transition: opacity .5s ease-in-out;
}

.change-slider:hover {
    opacity: 0.6 !important;
    transition: all .25s ease-in-out;
}

.left {
    left: 2%;
    background: url(https://cdn.algbb.fun/left.png) no-repeat;
    background-size: 100%;
}

.right {
    right: 2%;
    background: url(https://cdn.algbb.fun/right.png) no-repeat;
    background-size: 100%;
}

.feature {
    min-height: 3000px;
    padding: 100px 0;
    background-color: #fff;
}

.feature-item {
    margin: 200px 0;
}

.feature-img {
    max-width: 80%;
    height: auto;
    margin: auto;
    display: block;
}

.feature-info {
    margin: 30px 50px 0 150px;
}

.feature-decoration {
    width: 80px;
    height: 15px;
    border-radius: 16px;
    background-image: linear-gradient(-20deg, #b721ff 0%, #21d4fd 100%);
    opacity: 0.8;
}

.feature-title {
    font-size: 40px;
    font-weight: bold;
    letter-spacing: 4px;
    margin: 20px 0;
}

.feature-content-info {
    font-size: 25px;
}

.feature-button {
    width: 180px;
    height: 50px;
    margin-top: 35px;
    outline: none;
    border: none;
    border-radius: 16px;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    letter-spacing: 4px;
    opacity: 0.8;
    background-image: linear-gradient(to right, #6a11cb 0%, #2575fc 100%);
    transition: transform .5s ease-in-out, box-shadow .5s ease-in-out;
}

.feature-button:hover {
    transform: translateY(-5px);
    box-shadow: #000 0 25px 30px -20px;
    transition: all .25s ease-in-out;
}

.welcome-footer {
    min-height: 1000px;
    background-color: #fff;
}

.footer-slogan {
    min-height: 400px;
    margin: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-image: linear-gradient(-225deg, #AC32E4 0%, #7918F2 48%, #4801FF 100%);

}

.footer-title {
    color: #fff;
    font-size: 60px;
    font-weight: bold;
    letter-spacing: 12px;
}

.footer-button {
    width: 200px;
    height: 60px;
    margin-top: 40px;
    outline: none;
    border: none;
    border-radius: 12px;
    font-weight: bold;
    font-size: 20px;
    letter-spacing: 8px;
    color: #fff;
    background: linear-gradient(to bottom, #323232 0%, #3F3F3F 40%, #1C1C1C 150%), linear-gradient(to top, rgba(255, 255, 255, 0.40) 0%, rgba(0, 0, 0, 0.25) 200%);
    background-blend-mode: multiply;
    transition: transform .5s ease-in-out, box-shadow .5s ease-in-out;
}

.footer-button:hover {
    transform: translateY(-5px) !important;
    box-shadow: #000 0 25px 30px -20px;
    transition: all .25s ease-in-out;
}

.footer-wrap {
    min-height: 600px;
    background-image: linear-gradient(to bottom, #141414 0%, black 100%);
    /*background-color: black;*/
}

.footer-content-item {
    /*background-color: red;*/
    height: 540px;
    display: flex !important;
    align-items: center;
    flex-direction: column;
    margin-top: 100px;
    color: #fff;
    font-size: 20px;
}

.footer-content-title {
    font-weight: bold;
    width: 150px;
    margin-bottom: 40px;
    font-size: 30px;
}

.footer-content-link {
    width: 150px;
    margin: 5px 0;
    transition: color .25s ease-in-out;
}

.footer-content-link:hover {
    color: #185cfe;
    transition: all .25s ease-in-out;
}

.footer-qrcode {
    font-size: 16px;
    margin-top: 20px;
    color: #e1e1e1;
}

.footer-copyright {
    display: flex;
    justify-content: center;
    align-items: center;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    min-height: 60px;
    font-size: 18px;
    color: #d7d7d7;
    border-top: #d7d7d7 1px solid;
}
